@manual{ISO8601,
	title="Data elementes and interchange formats -Information interchange - Representation of dates and times",
	organization = "International Standard Office",
	year = "2004",
	month = "12"
}
@article{Fliegel:1968:LEM:364096.364097,
 author = {Fliegel, Henry F. and van Flandern, Thomas C.},
 title = {Letters to the editor: a machine algorithm for processing calendar dates},
 journal = {Commun. ACM},
 volume = {11},
 issue = {10},
 month = {October},
 year = {1968},
 issn = {0001-0782},
 pages = {657--},
 publisher = {ACM},
 address = {New York, NY, USA},
 keywords = {Fortran statement function, Gregorian calendar, Gregorian date, Julian calendar, Julian date, arithmetic statement function, calendar date, calendars, continuous day count, function, time interval},
}



@misc{Sch,
	title="Smithsonian Astrophysical Observatory",
	howpublished="http://www.cfa.harvard.edu/sao/",
	organization="Smithsonian Astrophysical Observatory",
	key="{Smithsonian Astrophysical Observatory}"
}

@misc{Nis,
	title="The official U.S time",
	howpublished="http://nist.time.gov/",
	organization="NIST: National Institute of Standards and Technology",
	key="{The official U.S time}"
}

@misc{Usn,
	title="Converting between Julian dates and Gregorian calendar dates",
	howpublished="http://www.usno.navy.mil/USNO/astronomical-applications/astronomical-information-center/julian-date-form/?searchterm=Julian%20Date",
	organization="Naval Oceanography Portal (The United States Naval Observatory)",
	key="{Converting between Julian dates and Gregorian calendar dates}"
}
@book{Dog,
	title="Calendars: Explanatory supplement to the astronomical almanac",
	author="L.E. Doggett",
	editor="P.Kenneth Seidelmann",
	year="1992",
	pages="606",
	chapter="12"
}

@misc{Wik,
	title="Leap second",
	howpublished="http://en.wikipedia.org/wiki/Leap\_second",
	key="{Leap second}"
}

@misc{Lea,
	title="The leap second",
	howpublished="http://hpiers.obspm.fr/eop-pc/earthor/utc/leapsecond.html",
	author="Daniel Gambis",
	organization="INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS)"	
}
@misc{Gpk,
	title="Date calculation algorithms",
	author="Gary Katch",
	url="http://alcor.concordia.ca/~gpkatch/gdate-algorithm.html",
	howpublished="Web"
}

@manual{Ora05,
	title="Native datatypes",
	url="http://download.oracle.com/docs/cd/B19306_01/server.102/b14220/datatype.htm",
	organization="Oracle Corp."
}

@manual{Mys,
	title="The DATETIME,DATE and TIMESTAMP types",
	url="http://dev.mysql.com/doc/refman/5.1/en/datetime.html",
	organization="MySQL AB."
}

@manual{Pos,
	title="Date/Time types",
	url="http://www.postgresql.org/docs/7.4/static/datatype-datetime.html",
	organization="Postgree SQL"
}

@manual{Pos2,
	title="Date/Time Functions and operators",
	url="http://www.postgresql.org/docs/8.0/interactive/functions-datetime.html",
	organization="Postgree SQL"
}

@manual{OraE118602,
	title="Workspace Manager Developer's Guide",
	year="2009",
	month="10",
	author="Chuck Murray and Bill Beauregard and Ben Spackhard",
	organization="Oracle Corp."
}

@manual{OraWm,
	title="Oracle database 11g Workspace Manager Overview",
	year="2009",
	month="09",
	organization="Oracle Corp."
}

@manual{OraWmT,
	title="Oracle Database 11g Workspace Manager Support for Oracle Spatial Topology Data Model",
	year="2009",
	month="09",
	organization="Oracle Corp"
}


@MISC{TSQL,
	author = {S.B. Navathe and R. Ahmed},
	title = {TSQL|A Language Interface for History Databases},
	year={1987},
	month={5}
}


@INPROCEEDINGS{Bohlen1998,
  author = {B\"ohlen, M.H. and Busatto, R. and Jensen, C.S.},
  title = {Point-versus interval-based temporal data models},
  booktitle = {Data Engineering, 1998. Proceedings., 14th International Conference on},
  year = {1998},
  pages = {192 -200},
  month = feb,
  issn = {1063-6382}
}

@MISC{Jensen97semanticsof,
    author = {Christian S. Jensen and Copyright C Fl and S. Jensen and Richard T. Snodgrass and Richard T. Snodgrass and Michael H. Bohlen and Renato Busatto and Heidi Gregersen and Christian S. Jensen (codirector and Kristian Torp and Hong Lin and Richard T. Snodgrass (codirector},
    title = {Semantics of Time-Varying Attributes and Their Use for Temporal Database Design},
    year = {1997}
}

@INPROCEEDINGS{856591,
author={Merlo, I. and Bertino, E. and Ferrari, E. and Gadia, S. and Guerrini, G.},
booktitle={Temporal Representation and Reasoning, 2000. TIME 2000. Proceedings. Seventh International Workshop on}, title={Querying multiple temporal granularity data},
year={2000},
month={},
volume={},
number={},
pages={103 -114},
ISSN={}}

@MISC{Lin97,
    author = {Hong Lin and Christian S. Jensen (codirector and Michael H. B Ohlen and Renato Busatto and Heidi Gregersen and Kristian Torp and Richard T. Snodgrass (codirector and Anindya Datta and Sudha Ram},
    title = {Efficient Conversion Between Temporal Granularities},
    year = {1997}
}

@phdthesis{brooks56,
	author="F.P.Brooks",
	title="The Analytic Design of automatic data processing systems",
	school="Harvard University",
	year="1956"
}
@article{Blum:1981:DCD:1672611.1672632,
 author = {Blum, Robert L.},
 title = {Displaying clinical data from a time-oriented database},
 journal = {Comput. Biol. Med.},
 volume = {11},
 issue = {4},
 month = {January},
 year = {1981},
 issn = {0010-4825},
 pages = {197--210},
 numpages = {14},
 acmid = {1672632},
 publisher = {Pergamon Press, Inc.},
 address = {Elmsford, NY, USA}
}

@article{legol20,
	title="LEGOL 2.0: A Relational Specification Language for Complex Rules",
	author="Joses, S.P. Manson and R.Stamper",
	journal="Information Systems",
	volume="4",
	month="11",
	year="1979",
	pages="293- -305"
}

@article{Clifford82,
	title="A model for historical databases",
	author="James Clifford",
	month="11",
	year="1982",
	journal="NYU Working paper"
}

@article{Clifford:1983:FST:319983.319986,
 author = {Clifford, James and Warren, David S.},
 title = {Formal semantics for time in databases},
 journal = {ACM Trans. Database Syst.},
 volume = {8},
 issue = {2},
 month = {June},
 year = {1983},
 issn = {0362-5915},
 pages = {214--254},
 numpages = {41},
 publisher = {ACM},
 address = {New York, NY, USA}
}


@article{Ariav:1986:TOD:7239.7350,
 author = {Ariav, Gad},
 title = {A temporally oriented data model},
 journal = {ACM Trans. Database Syst.},
 volume = {11},
 issue = {4},
 month = {December},
 year = {1986},
 issn = {0362-5915},
 pages = {499--527},
 numpages = {29},
 publisher = {ACM},
 address = {New York, NY, USA}
}

@ARTICLE{567055,
author={Tansel, A.U. and Tin, E.},
journal={Knowledge and Data Engineering, IEEE Transactions on}, title={The expressive power of temporal relational query languages},
year={1997},
month=jan/feb,
volume={9},
number={1},
pages={120 -134},
ISSN={1041-4347}
}

@phdthesis{913787,
 author = {Sadeghi, Rubik},
 title = {A database query language for operations on historical data},
 year = {1987},
 order_no = {AAID-80693},
 }


@article{Segev:1987:LMT:38714.38760,
 author = {Segev, Arie and Shoshani, Arie},
 title = {Logical modeling of temporal data},
 journal = {SIGMOD Rec.},
 volume = {16},
 issue = {3},
 month = {December},
 year = {1987},
 issn = {0163-5808},
 pages = {454--466},
 numpages = {13},
 publisher = {ACM},
 address = {New York, NY, USA}
}

@inproceedings{Clifford:1987:HRD:645472.653241,
 author = {Clifford, James and Croker, Albert},
 title = {The Historical Relational Data Model (HRDM) and Algebra Based on Lifespans},
 booktitle = {Proceedings of the Third International Conference on Data Engineering},
 year = {1987},
 pages = {528--537},
 numpages = {10},
 publisher = {IEEE Computer Society},
 address = {Washington, DC, USA}
}

@article{Clifford:1985:AHR:971699.318922,
 author = {Clifford, James and Tansel, Abdullah Uz},
 title = {On an algebra for historical relational databases: two views},
 journal = {SIGMOD Rec.},
 volume = {14},
 issue = {4},
 month = {May},
 year = {1985},
 issn = {0163-5808},
 pages = {247--265},
 numpages = {19},
 publisher = {ACM},
 address = {New York, NY, USA}
}

@article{Tansel:1986:ATD:23125.23132,
 author = {Tansel, Abdullah Uz},
 title = {Adding time dimension to relational model and extending relational algebra},
 journal = {Inf. Syst.},
 volume = {11},
 issue = {4},
 month = {October},
 year = {1986},
 issn = {0306-4379},
 pages = {343--355},
 numpages = {13},
 publisher = {Elsevier Science Ltd.},
 address = {Oxford, UK, UK}
}

@article{Gadia:1988:HRM:49346.50065,
 author = {Gadia, Shashi K.},
 title = {A homogeneous relational model and query languages for temporal databases},
 journal = {ACM Trans. Database Syst.},
 volume = {13},
 issue = {4},
 month = {October},
 year = {1988},
 issn = {0362-5915},
 pages = {418--448},
 numpages = {31},
 publisher = {ACM},
 address = {New York, NY, USA}
}


@inproceedings{Gadia:1985:QLH:325405.325412,
 author = {Gadia, Shashi K. and Vaishnav, Jay H.},
 title = {A query language for a homogeneous temporal database},
 booktitle = {Proceedings of the fourth ACM SIGACT-SIGMOD symposium on Principles of database systems},
 series = {PODS '85},
 year = {1985},
 location = {Portland, Oregon, United States},
 pages = {51--56},
 numpages = {6},
 publisher = {ACM},
 address = {New York, NY, USA}
}

@inproceedings{Gadia:1986:TMM:645471.655410,
 author = {Gadia, Shashi K.},
 title = {Toward a Multihomogeneous Model for a Temporal Database},
 booktitle = {Proceedings of the Second International Conference on Data Engineering},
 year = {1986},
 pages = {390--397},
 numpages = {8},
 publisher = {IEEE Computer Society},
 address = {Washington, DC, USA}
}

@phdthesis{Chuen,
	title="Query languages for a heterogeneous temporal database",
	author="Chuen-sing Yeung, B.S.",
	school="Texas Tech University",
	year="1986"
}

@article{Gadia:1988:GMR:971701.50233,
 author = {Gadia, Shashi K. and Yeung, Chuen-Sing},
 title = {A generalized model for a relational temporal database},
 journal = {SIGMOD Rec.},
 volume = {17},
 issue = {3},
 month = {June},
 year = {1988},
 issn = {0163-5808},
 pages = {251--259},
 numpages = {9},
 publisher = {ACM},
 address = {New York, NY, USA}
}

﻿@incollection {springerlink:10.1007/3-540-19074-0_71,
   author = {Lorentzos, Nikos and Johnson, Roger},
   affiliation = {Birkbeck College, London University Department of Computer Science Malet Street WC1E 7HX London England Malet Street WC1E 7HX London England},
   title = {An extension of the relational model to support generic intervals},
   booktitle = {Advances in Database Technology—EDBT '88},
   series = {Lecture Notes in Computer Science},
   editor = {Schmidt, J. and Ceri, S. and Missikoff, M.},
   publisher = {Springer Berlin / Heidelberg},
   isbn = {},
   pages = {528-542},
   volume = {303},
   year = {1988}
}

@article{Lorentzos:1989:HDT:70777.70787,
 author = {Lorentzos, Nikos A. and Kollias, V. J.},
 title = {The handling of depth and time intervals in soil-information systems},
 journal = {Comput. Geosci.},
 volume = {15},
 issue = {3},
 month = {March},
 year = {1989},
 issn = {0098-3004},
 pages = {395--401},
 numpages = {7},
 publisher = {Pergamon Press, Inc.},
 address = {Tarrytown, NY, USA}
}

@mastersthesis{kim78,
title="The data system",
school="Pennsylvania",
year="1978",
author="K.A. Kimball"
}

@article{law87,
	title="The POSTGRES data model",
	author="Lawrence A. Rowe and Michael R. Stonebreker",
	year="1987",
	month="06"
}
@MISC{Ston87,
	title={The Postgres Papers},
	author={L.Rowe and M.Stonebreker"},
	year={1987},
	month={6}
}

	


@phdthesis{910377,
 author = {Ben-Zvi, Jacov},
 title = {The time relational model},
 year = {1982},
 order_no = {AAI8219638},
 publisher = {University of California, Los Angeles},
 }

@inproceedings{Snodgrass:1985:TTD:318898.318921,
 author = {Snodgrass, Richard and Ahn, Ilsoo},
 title = {A taxonomy of time databases},
 booktitle = {Proceedings of the 1985 ACM SIGMOD international conference on Management of data},
 series = {SIGMOD '85},
 year = {1985},
 location = {Austin, Texas, United States},
 pages = {236--246},
 numpages = {11},
 publisher = {ACM},
 address = {New York, NY, USA}
}

@article{sno86,
	title="Temporal databases",
	author="R.T. Snodgrass and I. Ahn.",
	year="1986",
	month="09",
	journal="IEEE computer",
	volume="19(9)",
	pages="35- -42"
}

@inproceedings{Snodgrass:1984:TQL:588011.588041,
 author = {Snodgrass, Richard},
 title = {The temporal query language TQuel},
 booktitle = {Proceedings of the 3rd ACM SIGACT-SIGMOD symposium on Principles of database systems},
 series = {PODS '84},
 year = {1984},
 location = {Waterloo, Ontario, Canada},
 pages = {204--213},
 numpages = {10},
 publisher = {ACM},
 address = {New York, NY, USA}
}
@article{Snodgrass:1993:ATQ:642875.642890,
 author = {Snodgrass, Richard Thomas and Gomez, S. and McKenzie, E.},
 title = {Aggregates in the Temporal Query Language TQuel},
 journal = {IEEE Trans. on Knowl. and Data Eng.},
 volume = {5},
 issue = {5},
 month = {October},
 year = {1993},
 issn = {1041-4347},
 pages = {826--842},
 numpages = {17},
 publisher = {IEEE Educational Activities Department},
 address = {Piscataway, NJ, USA}
}

@phdthesis{Mckenzie:1988:ALQ:915060,
 author = {Mckenzie,Jr., Leslie Edwin},
 title = {An algebraic language for query and update of temporal databases},
 year = {1988},
 note = {AAI8914449},
 publisher = {The University of North Carolina at Chapel Hill}
}

@misc{mck81,
	title="Supporting Valid Time in an Historical Relational Algebra: Proofs and Extensions.",
	author="J. E. McKenzie and R. T. Snodgrass",
	school="University of Arizona, Tucson, AZ.",
	year="1981"
}

@article{Bhargava:1993:RDS:642811.642819,
 author = {Bhargava, G. and Gadia, S. K.},
 title = {Relational Database Systems with Zero Information Loss},
 journal = {IEEE Trans. on Knowl. and Data Eng.},
 volume = {5},
 issue = {1},
 month = {February},
 year = {1993},
 issn = {1041-4347},
 pages = {76--87},
 numpages = {12},
 publisher = {IEEE Educational Activities Department},
 address = {Piscataway, NJ, USA}
}


@misc{gad92,
	title="A Seamless Generic Extension of SQL for Querying Temporal Data",
	author="S. K. Gadia.",
	year="1992",
	month="05"
}
@phdthesis{171833,
 author = {Thompson, Peter MacLeod},
 title = {A temporal data model based on accounting principles},
 year = {1991},
 publisher = {University of Calgary},
 address = {Calgary, Alta., Canada, Canada}
 }

@article{fuzz2009,
        author={Garrido,C. and Marin,N. and Pons,O.},
        year={2009},
        title={Fuzzy intervals to represent fuzzy valid time in a temporal relational database},
        journal={International Journal of Uncertainty, Fuzziness and Knowlege-Based Systems},
        volume={17},
        number={SUPPL. 1},
        pages={173-192}
}

@Article{Cru97,
	title="A theoretical fuzzy time model based on granularities",
	author="Van der Cruyssen, B. and De Caluwe, R.and De Tr\'{e}, G.",
	journal="EUFIT'97",
	year="1997",
	month="Sep",
	publisher="ELITE Foundation",	
	pages="1127--1131"
}

@inproceedings{Nascimento95,
    author = {{Mario A.} Nascimento and {Margaret H.} Eich},
    title = {Decision Time in Temporal Databases},
    booktitle = {Proceedings of the Second International Workshop on Temporal Representation and Reasoning},
    year = {1995},
    editor = {},
    volume = {},
    series = {},
    pages = {157-162},
    address = {},
    month = {},
    publisher = {}
}

﻿@incollection {Yu1998,
   author = {Wu, Yu and Jajodia, Sushil and Wang, X.},
   affiliation = {George Mason University Center for Secure Information Systems Department of Information & Software Systems Engineering 22030-4444 Fairfax VA},
   title = {Temporal database bibliography update},
   booktitle = {Temporal Databases: Research and Practice},
   series = {Lecture Notes in Computer Science},
   editor = {Etzion, Opher and Jajodia, Sushil and Sripada, Suryanarayana},
   publisher = {Springer Berlin / Heidelberg},
   keyword = {Computer Science},
   pages = {338-366},
   volume = {1399},
   year = {1998}
}


﻿@incollection{Snodgrass98,
    author = {Richard T. Snodgrass and Copyright Richard and T. Snodgrass and T. Snodgrass and Christian S. Jensen and Christian S. Jensen and Christian S. Jensen and Andreas Steiner and Andreas Steiner and Michael H. Böhlen and Michael H. Böhlen and Michael H. Böhlen and Michael H. Böhlen and Renato Busatto and Heidi Gregersen and Christian S. Jensen (codirector and Kristian Torp and Anindya Datta and Richard T. Snodgrass (codirector and Curtis E. Dyreson},
    title = {Transitioning Temporal Support in TSQL2 to SQL3},
     booktitle = {Temporal Databases: Research and Practice},
   series = {Lecture Notes in Computer Science},
   editor = {Etzion, Opher and Jajodia, Sushil and Sripada, Suryanarayana},
   publisher = {Springer Berlin / Heidelberg},
   keyword = {Computer Science},
 volume = {1399},
   year = {1998}
}

@techreport{Kraus1997,
 author = {Kraus, Sarit and Sagiv, Yehoshua and Subrahmanian, V. S.},
 title = {Representing and integrating multiple calendars},
 year = {1997},
 source = {Report No. UMIACS-TR-97-12},
 institution = {University of Maryland at College Park},
 address = {College Park, MD, USA},
} 




@article{Sarda90,
 author = {Sarda, N. L.},
 title = {Extensions to SQL for Historical Databases},
 journal = {IEEE Trans. Knowl. Data Eng.},
 volume = {2},
 issue = {2},
 year = {1990},
 issn = {1041-4347},
 pages = {220--230},
 numpages = {11},
 publisher = {IEEE Educational Activities Department},
 address = {Piscataway, NJ, USA}
}
	
@article{Dubois1983,
author = {Didier Dubois and Henri Prade},
title = {Ranking Fuzzy Numbers in the Setting of Possibility Theory},
journal = {Information Sciences},
volume = {30},
issue = {3},
year = {1983},
issn = {0020-0255},
eissn = {},
pages = {183-224},
numpages = {42},
acmid = {},
publisher = {Elsevier Science Publishing Co. Inc.},
address = {52 Vanderbilt Ave., New York, U.S.A.}
}

@article {knight1993,
   author = {Knight, B. and Ma, J.},
   title = {Time representation: A taxonomy of temporal models},
   journal = {Artificial Intelligence Review},
   publisher = {Springer Netherlands},
   issn = {0269-2821},
   keyword = {Computer Science},
   pages = {401-419},
   volume = {7},
   issue = {6},
   year = {1993}
}

@ARTICLE{Chountas2000,
  author = {Chountas, P. and Petrounias, I.},
  title = {Modelling and Representation of Uncertain Temporal Information},
  journal = {Requirements Engineering},
  year = {2000},
  volume = {5},
  pages = {144-156},
  affiliation = {UMIST, Manchester, UK GB},
  file = {:/home/jose/Documentos/fpi/TO-READ/Modelling and representation of uncertain temporal information.pdf:PDF},
  issn = {0947-3602},
  issue = {3},
  keyword = {Computer Science},
  owner = {jose},
  publisher = {Springer London},
  timestamp = {2012.03.07}
}
	
@INPROCEEDINGS{5151,
author={Dutta, S.},
booktitle={Multiple-Valued Logic, 1988., Proceedings of the Eighteenth International Symposium on},
title={An event based fuzzy temporal logic},
year={1988},
month={0-0 },
volume={},
number={},
pages={64 -71}
}

@article{Virant199639,
title = "Attention to time in fuzzy logic",
journal = "Fuzzy Sets and Systems",
volume = "82",
number = "1",
pages = "39 - 49",
year = "1996",
note = "",
issn = "0165-0114",
author = "J. Virant and N. Zimic",
keywords = "Approximate reasoning",
keywords = "Fuzzy time",
keywords = "Membership function",
keywords = "Switching logic",
keywords = "Temporal logic",
keywords = "Time operator"
}

@ARTICLE{Dey1996,
  author = {Dey, Debabrata and Sarkar, Sumit},
  title = {A probabilistic relational model and algebra},
  journal = {ACM Trans. Database Syst.},
  year = {1996},
  volume = {21},
  pages = {339--369},
  number = {3},
  month = sep,
  acmid = {232796},
  address = {New York, NY, USA},
  issn = {0362-5915},
  issue_date = {Sept. 1996},
  keywords = {data incompleteness, data uncertainty, probabilistic relation, probability
	calculus, relational algebra, relational model},
  numpages = {31},
  owner = {jose},
  publisher = {ACM},
  timestamp = {2012.03.14}
}

@ARTICLE{Lakshmanan1997,
  author = {Laks V. S. Lakshmanan and Nicola Leone and Robert Ross and V. S.
	Subrahmanian},
  title = {ProbView: A Flexible Probabilistic Database System},
  journal = {ACM TRANSACTIONS ON DATABASE SYSTEMS},
  year = {1997},
  volume = {22},
  pages = {419--469},
  number = {3},
  owner = {jose},
  timestamp = {2012.03.14}
}

@ARTICLE{Haddawy1996,
  author = {Peter Haddawy},
  title = {Believing Change and Changing Belief},
  journal = {IEEE Transactions on Systems, Man, and Cybernetics Special Issue
	on Higher-Order Uncertainty},
  year = {1996},
  volume = {26},
  owner = {jose},
  timestamp = {2012.03.14}
}
@INPROCEEDINGS{Kabanza1990,
  author = {F. Kabanza and J-m. Stevenne and P. Wolper},
  title = {Handling Infinite Temporal Data},
  booktitle = {Journal of Computer and System Sciences},
  year = {1990},
  pages = {392--403},
  owner = {jose},
  timestamp = {2012.03.14}
}

@MISC{Guting,
  author = {Ralf Hartmut G\"uting and Markus Schneider},
  title = {Moving Objects Databases},
  address = {Hagen, Germany},
  file = {:/home/jose/Documentos/fpi/TO-READ/KE1.pdf:PDF},
  organization = {FernUniversit\"at},
  owner = {jose},
  timestamp = {2012.03.14},
  url = {http://dna.fernuni-hagen.de/Lehre-offen/Kurse/1675/KE1.pdf}
}

@INPROCEEDINGS{Dieker2000,
  author = {Dieker, Stefan and G\"{u}ting, Ralf Hartmut},
  title = {Plug and Play with Query Algebras: SECONDO-A Generic DBMS Development
	Environment},
  booktitle = {Proceedings of the 2000 International Symposium on Database Engineering
	\& Applications},
  year = {2000},
  series = {IDEAS '00},
  pages = {380--392},
  address = {Washington, DC, USA},
  publisher = {IEEE Computer Society},
  acmid = {686903},
  file = {:/home/jose/Documentos/fpi/TO-READ/Dieker2000.pdf:PDF},
  isbn = {0-7695-0789-1},
  keywords = {SECONDO, algebra modules, data definitions, data models, database
	management systems, database systems implementation, extensibility,
	extensible query processing, extensible system architecture, generic
	DBMS development environment, operators, plug-and-play, query algebras,
	query language definitions, query languages, second-order signature,
	support functions, system frame, system functionality, type constructors,
	type registration, user commands},
  numpages = {13},
  owner = {jose},
  timestamp = {2012.03.14}
}

@inbook{129895,

  author       = {De Caluwe, Rita and De Tr\'e, Guy and Van Der Cruyssen, Bart and Devos, Filip and Maesfranckx, Patricia},
  editor       = {Pons, Olga and Vila, Maria Amparo and Kacprzyk, Janusz},
  isbn         = {9783790812558},
  language     = {eng},
  pages        = {67--88},
  publisher    = {Physica-Verlag},
  series       = {Knowledge management in fuzzy databases},
  title        = {Time management in fuzzy and uncertain object-oriented databases},
  volume       = {39},
  year         = {2000}
}
